Network, router device, route updating suppression method...

Details Network, router device, route updating suppression method... Network, router device, route updating suppression method...

2004-11-19

2009-08-25

Pham, Chi H. (Department: 2416)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S252000, C370S410000

Reexamination Certificate

active

07580418

ABSTRACT:
A router (1) introduces virtual interfaces (3-1-3-n) between network interfaces (2-1-2-n) and a routing processing unit (4). The virtual interfaces (3-1-3-n) function to conceal a state such as a hit of the network interfaces (2-1-2-n) from the routing processing unit (4). One virtual interface is provided for each of the network interfaces (2-1-2-n). In the virtual interfaces (3-1-3-n), an up state, a down state, and a hit state are prepared as the states which the link takes. In the case of the hit state, the virtual interfaces (3-1-3-n) do not notify the routing processing unit (4) of a change in link state.

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